lpaam复合高吸水树脂的制备及性能

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1、ABSTRACTSuperabsorbentpolymer(SAP)isakindofnewfunctionalpolymericmaterials，whichcanabsorbalargeamountofwaterandtheabsorbedwaterishardlyremovedevenundersomepressure．Beeauseoftheirexcellentproperties，superabsorbentshaveattractedconsiderableinterestandproceededtoresearchfors

2、ciencistsandtechnolohistsandbeenusedinmanyapplicationssuchasagriculture，horticulture，femininenapkins，sanitation，medicineandsoilimprovement．Ligninisrenewable，non·toxicandcommerciallyavailable，whichmakesligninutilizationavaluable．Nowadays，mostligninapplicationsarebasedontec

3、hnicallignins，whicharemostlyseparatedduringpulpingprocess．Mostusefulmaterialsandwaterreseourcescanbewellreusedbytheapplicationofadvancedtreatmenttechnologyforthewastewaterofpulpingandpapermaking．Howeveralargenumberoflignininthewastewaterareusedasasourceoffuel，ordischarged

4、withoutanytreatment，whichcausedconsequentheavywasteofresourcesandseverepollutionofenvironment．So，researchontheutilizationoftechnicalligninisveryimportantandsignificanttotreatwiththewatsewaterfrompapermillandtomakefullutilazationofnaturalresource．Inthispaper,LPAAMisprepare

5、dusingsodiumlignosulfonate(LS-Na)，acrylicacid(AA)andacrylamide(AM)asrawmaterials，kaolinasinorganicfiller，potassiumperoxydisulfate(KPS)asinitiator，N,N'-methylene—bis—acrylamide(NMBA)ascross-linker，bysolutionpolymerizationusingorthogonaldesignandsaponificationreaction．Theop

6、timizedformulabasedontheassessmentoftheabsorbenciesindistilledwaterand0．9％NaClsolutionisobtainedasfollows：m(AM)：m(AA)=I：1，m(KPS)=1．0％，m(NMBA)=0．1％，pH=3．Thenthesaponificationreactionbasedontheabove．mentionedoptimizedformulasuperabsorbentisusedwithdifferentNaOHsolutionat90℃

7、for2h．Itsabsorbenciesindistilledwaterand0．9％NaCI(massconcentration)aqueoussolutionarerespectively10039／gand899／g．TherelationshipbetweentheabsorbencyofLPAAMandtheabsorbingtimeisinvestigated．Theeffectoftypesandconcentrations，pHandtemperaturesofthesaltsolutionsonthebalanceab

8、sorbencyiSdiscussed．IIIThr。ughtheresearch。ftheadsorpti。n。fCu2+andZn2+ontofLPAAlM，thleadsorptionk